| Acronym | Meaning |
| HV | High Velocity |
| H-CITE | Horizontal-Cargo Integration Test Equipment |
| IMU | Inertial Measurement Unit |
| HER | HIM EquiPment Rack |
| OOS | Orbit-to-Orbit Stage |
| MTEO | Optical Maintenance Test Equipment |
| MTEC | Maintenance Test Equipment Catalog |
| RDY | Ready |
| SOCS | Subsystem Operation And Checkout System |
| SPG | Signal Point Ground |